Silane-based compound and organic light-emitting device including the same

ABSTRACT

A silane-based compound and an organic light-emitting device including the same, the compound being represented by Formula 1:

CROSS-REFERENCE TO RELATED APPLICATION

Korean Patent Application No. 10-2013-0157524, filed on Dec. 17, 2013,in the Korean Intellectual Property Office, and entitled: “Silane-BasedCompounds And Organic Light-Emitting Devices Comprising The Same,” isincorporated by reference herein in its entirety.

BACKGROUND

1. Field

Embodiments relate to a silane-based compound and an organiclight-emitting device including the same.

2. Description of the Related Art

Organic light-emitting devices (OLEDs), which are self-emitting devices,have advantages such as wide viewing angles, excellent contrast, quickresponse, high brightness, excellent driving voltage characteristics,and can provide multicolored images.

An organic light-emitting device may have a structure in which a firstelectrode, a hole transport region, an emission layer, an electrontransport region, and a second electrode are sequentially disposed inthis order on a substrate. Holes injected from the first electrode maymove to the emission layer via the hole transport region, whileelectrons injected from the second electrode may move to the emissionlayer via the electron transport region. Carriers (e.g., the holes andelectrons) may recombine in the emission layer to generate exitons. Whenthe exitons drop from an excited state to a ground state, light isemitted.

SUMMARY

Embodiments are directed to a silane-based compound and an organiclight-emitting device including the same.

According to one or more embodiments, there is provided a silane-basedcompound represented by Formula 1:

wherein, in Formula 1,

L₁ and L₂ are each independently selected from a substituted orunsubstituted C₃-C₁₀ cycloalkylene group, a substituted or unsubstitutedC₁-C₁₀ heterocycloalkylene group, a substituted or unsubstituted C₃-C₁₀cycloalkenylene group, a substituted or unsubstituted C₁-C₁₀heterocycloalkenylene group, a substituted or unsubstituted C₆-C₆₀arylene group, a substituted or unsubstituted C₁-C₆₀ heteroarylenegroup, a substituted or unsubstituted divalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted divalentnon-aromatic condensed heteropolycyclic group.

n1 is an integer selected from 0 to 3,

n2 is an integer selected from 1 to 3,

R₁ is selected from a hydrogen, a deuterium, a substituted orunsubstituted C₁-C₆₀ alkyl group, a substituted or unsubstituted C₂-C₆₀alkenyl group, a substituted or unsubstituted C₂-C₆₀ alkynyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkyl group, a substituted orunsubstituted C₃-C₁₀ cycloalkenyl group, a substituted or unsubstitutedC₁-C₁₀ heterocycloalkenyl group, a substituted or unsubstituted C₆-C₆₀aryl group, a substituted or unsubstituted C₁-C₆₀ heteroaryl group, asubstituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic condensed heteropolycyclic group,

a1 is an integer selected from 1 to 3,

wherein at least one substituent of the substituted C₃-C₁₀ cycloalkylenegroup, the substituted C₁-C₁₀ heterocycloalkylene group, the substitutedC₃-C₁₀ cycloalkenylene group, the substituted C₁-C₁₀heterocycloalkenylene group, the substituted C₆-C₆₀ arylene group, thesubstituted C₁-C₆₀ heteroarylene group, the substituted divalentnon-aromatic condensed polycyclic group, the substituted divalentnon-aromatic condensed heteropolycyclic group, the substituted C₁-C₆₀alkyl group, the substituted C₂-C₆₀ alkenyl group, the substitutedC₂-C₆₀ alkynyl group, the substituted C₃-C₁₀ cycloalkyl group, thesubstituted C₁-C₁₀ heterocycloalkyl group, the substituted C₃-C₁₀cycloalkenyl group, the substituted C₁-C₁₀ heterocycloalkenyl group, thesubstituted C₆-C₁₀ aryl group, the substituted C₁-C₆₀ heteroaryl group,the substituted monovalent non-aromatic condensed polycyclic group, andthe substituted monovalent non-aromatic condensed heteropolycyclic groupis selected from

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group and a salt thereof, a sulfonic acid groupand a salt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₁₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group; and

—N(Q₁)(Q₂), —Si(Q₃)(Q₄)(Q₅)

—B(Q₆)(Q₇),

R₂, R₃, and Q₁ to Q₇ are each independently selected from a hydrogen, adeuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C₁-C₆₀alkyl group, a C₆-C₆₀ aryl group, a C₂-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group,

a2 is an integer selected from 1 to 3,

a3 is an integer selected from 1 to 5,

m is an integer selected from 1 to 4, and

k is an integer selected from 1 to 4.

According to one or more embodiments, an organic light-emitting deviceincludes: a first electrode; a second electrode disposed opposite to thefirst electrode; and an organic layer disposed between the firstelectrode and the second electrode and including an emission layer,wherein the organic layer includes the above-described silane-basedcompound.

BRIEF DESCRIPTION OF THE DRAWING

Features will be apparent to those of skill in the art by describing indetail exemplary embodiments with reference to the attached drawing inwhich:

FIG. 1 illustrates a schematic cross-sectional view of a structure of anorganic light-emitting device according to an embodiment.

DETAILED DESCRIPTION

Example embodiments will now be described more fully hereinafter withreference to the accompanying drawing; however, they may be embodied indifferent forms and should not be construed as limited to theembodiments set forth herein. Rather, these embodiments are provided sothat this disclosure will be thorough and complete, and will fullyconvey exemplary implementations to those skilled in the art.

In the drawing FIGURE, the dimensions of layers and regions may beexaggerated for clarity of illustration. Like reference numerals referto like elements throughout.

As used herein, the term “and/or” includes any and all combinations ofone or more of the associated listed items. Expressions such as “atleast one of,” when preceding a list of elements, modify the entire listof elements and do not modify the individual elements of the list.

According to an embodiment, there is provided a silane-based compoundrepresented by Formula 1 below:

In Formula 1 above,

L₁ and L₂ may be each independently selected from a substituted orunsubstituted C₃-C₁₀ cycloalkylene group, a substituted or unsubstitutedC₁-C₁₀ heterocycloalkylene group, a substituted or unsubstituted C₃-C₁₀cycloalkenylene group, a substituted or unsubstituted C₁-C₁₀heterocycloalkenylene group, a substituted or unsubstituted C₆-C₆₀arylene group, a substituted or unsubstituted C₁-C₆₀ heteroarylenegroup, a substituted or unsubstituted divalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted divalentnon-aromatic condensed heteropolycyclic group,

wherein at least one substituent of the substituted C₃-C₁₀ cycloalkylenegroup, the substituted C₁-C₁₀ heterocycloalkylene group, the substitutedC₃-C₁₀ cycloalkenylene group, the substituted C₁-C₁₀heterocycloalkenylene group, the substituted C₆-C₆₀ arylene group, thesubstituted C₁-C₆₀ heteroarylene group, the substituted divalentnon-aromatic condensed polycyclic group, the substituted divalentnon-aromatic condensed heteropolycyclic group may be selected from

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine, a hydrazone, acarboxylic acid group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine, a hydrazone, acarboxylic acid group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₃-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine, a hydrazone, a carboxylic acid group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group; and

—N(Q₁)(Q₂), —Si(Q₃)(Q₄)(Q₅), and —B(Q₆)(Q₇), where Q₁ to Q₇ may be eachindependently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, acyano group, a nitro group, a C₁-C₆₀ alkyl group, a C₁-C₆₀ aryl group, aC₂-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic condensed heteropolycyclic group.

In some embodiments, L₁ and L₂ in Formula 1 may be each independentlyselected from

a phenylene group, a pentalenylene group, an indenylene group, anaphthylene group, an azulenylene group, a heptalenylene group, anindacenylene group, an acenaphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenalenylene group, a phenanthrenylenegroup, an anthracenylene group, a fluoranthenylene group, atriphenylenylene group, a pyrenylene group, a chrysenylene group, anaphthacenylene group, a picenylene group, a perylenylene group, apentaphenylene group, a hexacenylene group, a pentacenylene group, arubicenylene group, a coronerylene group, an ovalenylene group, apyrrolylene group, a thienylene group, a furanylene group, a silolylenegroup, an imidazolylene group, a pyrazolylene group, a thiazolylenegroup, an isothiazolylene group, an oxazolylene group, an isooxazolylenegroup, a pyridinylene group, a pyrazinylene group, a pyrimidinylenegroup, a pyridazinylene group, an isoindolylene group, an indolylenegroup, an indazolylene group, a purinylene group, a quinolinylene group,an isoquinolinylene group, a benzoquinolinylene group, a phthalazinylenegroup, a naphthyridinylene group, a quinoxalinylene group, aquinazolinylene group, a cinnolinylene group, a carbazolylene group, aphenanthridinylene group, an acridinylene group, a phenanthrolinylenegroup, a phenazinylene group, a benzoimidazolylene group, abenzofuranylene group, a benzothienylene group, a benzosilolylene group,an isobenzothiazolylene group, a benzooxazolylene group, anisobenzooxazolylene group, a triazolylene group, a tetrazolylene group,an oxadiazolylene group, a triazinylene group, a dibenzofuranylenegroup, a dibenzothiophenylene group, a benzocarbazolylene group, adibenzocarbazolyene group, and a dibenzosilolylene group; and

a phenylene group, a pentalenylene group, an indenylene group, anaphthylene group, an azulenylene group, a heptalenylene group, anindacenylene group, an acenaphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenalenylene group, a phenanthrenylenegroup, an anthracenylene group, a fluoranthenylene group, atriphenylenylene group, a pyrenylene group, a chrysenylene group, anaphthacenylene group, a picenyenel group, a perylenylene group, apentaphenylene group, a hexacenylene group, a pentacenylene group, arubicenylene group, a coronerylene group, an ovalenylene group, apyrrolylene group, a thienylene group, a furanylene group, a silolylenegroup, an imidazolylene group, a pyrazolylene group, a thiazolylenegroup, an isothiazolylene group, an oxazolylene group, an isooxazolylenegroup, a pyridinylene group, a pyrazinylene group, a pyrimidinylenegroup, a pyridazinylene group, an isoindolylene group, an indolylenegroup, an indazolylene group, a purinylene group, a quinolinylene group,an isoquinolinylene group, a benzoquinolinylene group, a phthalazinylenegroup, a naphthyridinylene group, a quinoxalinylene group, aquinazolinylene group, a cinnolinylene group, a carbazolylene group, aphenanthridinylene group, an acridinylene group, a phenanthrolinylenegroup, a phenazinylene group, a benzoimidazolylene group, abenzofuranylene group, a benzothienylene group, a benzosilolylene group,an isobenzothiazolylene group, a benzooxazolylene group, anisobenzooxazolylene group, a triazolylene group, a tetrazolylene group,an oxadiazolylene group, a triazinylene group, a dibenzofuranylenegroup, a dibenzothiophenylene group, a benzocarbazolylene group, adibenzocarbazolyene group, and a dibenzosilolylene group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, acyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cyclohexcenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coroneryl group, an obarenyl group, apyrrolyl group, a thienyl group, a furanyl group, a silolyl group, animidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolylgroup, an oxazolyl group, an isooxazolyl group, a pyridinyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolylgroup, an indolyl group, an indazolyl group, a purinyl group, aquinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a carbazolyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothienyl group, a benzosilolyl group, an isobenzothiazolyl group, abenzooxazolyl group, an isobenzooxazolyl group, a triazolyl group, atetrazol group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothienyl group, a benzocarbazolyl group, adibenzocarbazolyl group, and a dibenzosilolyl group, but is not limitedthereto.

In some other embodiments, L₁₁ and L₁₂ in Formula 1 may be eachindependently a group represented by one of Formulae 3-1 to 3-32, but isnot limited thereto:

In Formulae 3-1 to 3-32,

Y₁ may be selected from C(Q₃₁)(Q₃₂), N(Q₃₃), an oxygen atom, a sulfuratom, and Si(Q₃₄)(Q₃₅),

Q₃₁ to Q₃₅ may be each independently selected from a hydrogen, adeuterium, C₁-C₂₀ alkyl group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group,

Z₁ and Z₂ may be each independently selected from a hydrogen, adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group,

d1 may be an integer selected from 1 to 4,

d2 may be an integer selected from 1 to 3,

d3 may be an integer selected from 1 to 6,

d4 may be an integer selected from 1 to 8,

d5 may be 1 or 2, and

d6 may be an integer selected from 1 to 5.

In some other embodiments, L₁₁ and L₁₂ in Formula 1 may be eachindependently a group represented by one of Formulae 4-1 to 4-23, but isnot limited thereto:

In Formula 1 above, n1, which indicates the number of L₁s, may be aninteger selected from 0, 1, 2, and 3. For example, n1 in Formula 1 maybe 0 or 1, but is not limited thereto. When n1 is 0, a moietyrepresented by (L₁)_(n1) may be a single or direct bond. When n1 is 2 orgreater, a plurality of L₁s may be identical to or different from eachother.

In Formula 1 above, n2, which indicates the number of L₂s, may be aninteger selected from 1, 2, and 3. For example, n2 in Formula 1 may be 1or 2, but is not limited thereto. When n2 is 2 or greater, a pluralityof L₂s may be identical to or different from each other.

In Formula 1 above, R₁ may be selected from a hydrogen, a deuterium, asubstituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₂-C₆₀ alkenyl group, a substituted or unsubstitutedC₂-C₆₀ alkynyl group, a substituted or unsubstituted C₃-C₁₀ cycloalkylgroup, a substituted or unsubstituted C₁-C₁₀ heterocycloalkyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkenyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenyl group, a substituted orunsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₁-C₆₀heteroaryl group, a substituted or unsubstituted monovalent non-aromaticcondensed polycyclic group, and a substituted or unsubstitutedmonovalent non-aromatic condensed heteropolycyclic group,

wherein at least one substituent of the substituted C₁-C₆₀ alkyl group,the substituted C₂-C₆₀ alkenyl group, the substituted C₂-C₆₀ alkynylgroup, the substituted C₃-C₁₀ cycloalkyl group, the substituted C₁-C₁₀heterocycloalkyl group, the substituted C₃-C₁₀ cycloalkenyl group, thesubstituted C₁-C₁₀ heterocycloalkenyl group, the substituted C₆-C₆₀ arylgroup, the substituted C₁-C₆₀ heteroaryl group, the substitutedmonovalent non-aromatic condensed polycyclic group, and the substitutedmonovalent non-aromatic condensed heteropolycyclic group is selectedfrom

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine, a hydrazone, acarboxylic acid group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine, a hydrazone, acarboxylic acid group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₃-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine, a hydrazone, a carboxylic acid group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group; and

—N(Q₁)(Q₂), —Si(Q₃)(Q₄)(Q₅), and —B(Q₆)(Q₇), where Q₁ to Q₇ may be eachindependently selected from a hydrogen, a deuterium, —F, —Cl, —Br, —I, acyano group, a nitro group, a C₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, aC₂-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic condensed heteropolycyclic group.

In some embodiments, R₁ in Formula 1 above may be selected from

a hydrogen, a deuterium, a methyl group, an ethyl group, an n-propylgroup, an iso-propyl group, an n-butyl group, a sec-butyl group, aniso-butyl group, and a tert-butyl group;

a methyl group, an ethyl group, an n-propyl group, an iso-propyl group,an n-butyl group, a sec-butyl group, an iso-butyl group, and atert-butyl group, each substituted with at least one of a deuterium, —F,—Cl, —Br, —I, a cyano group, and a nitro group;

a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, atriazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group;and

a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a carbazolyl group, atriazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group,each substituted with at least one substituent selected from adeuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, a C₁-C₂₀alkyl group, a C₁-C₂₀ alkyl group substituted with —F, —Cl, —Br or —I, aC₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, a triazinyl group, and —Si(Q₃)(Q₄)(Q₅), where Q₃ to Q₅may be each independently selected from a C₁-C₂₀ alkyl group and aC₆-C₆₀ aryl group. However, embodiments are not limited thereto.

In some other embodiments, R₁ in Formula 1 above may be selected from,but not limited to,

a hydrogen, a deuterium, a methyl group, an ethyl group, an n-propylgroup, an iso-propyl group, an n-butyl group, a sec-butyl group, aniso-butyl group, and a tert-butyl group;

a methyl group, an ethyl group, an n-propyl group, an iso-propyl group,an n-butyl group, a sec-butyl group, an iso-butyl group, and atert-butyl group, each substituted with at least one of a deuterium, —F,a cyano group, and a nitro group;

a phenyl group, a naphthyl group, a fluorenyl group, an anthracenylgroup, a pyridinyl group, a pyrazinyl group, a carbazolyl group, atriazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group;

a phenyl group, a naphthyl group, a fluorenyl group, an anthracenylgroup, a pyridinyl group, a pyrazinyl group, a carbazolyl group, atriazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group,each substituted with at least one of a deuterium, —F, a cyano group, anitro group, a methyl group, an ethyl group, an n-propyl group, aniso-propyl group, an n-butyl group, a sec-butyl group, an iso-butylgroup, a tert-butyl group, —CF₃, a methoxy group, an ethoxy group, atert-butoxy group, a phenyl group, a naphthyl group, a fluorenyl group,a spiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenylgroup, a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, atriazinyl group, —Si(CH₃), and —Si(Ph)₃.

In still other embodiments, R₁ in Formula 1 above may be selected from,but not limited to,

a hydrogen, a deuterium, a methyl group, an ethyl group, an n-propylgroup, an iso-propyl group, an n-butyl group, a sec-butyl group, aniso-butyl group, and a tert-butyl group;

a methyl group, an ethyl group, an n-propyl group, an iso-propyl group,an n-butyl group, a sec-butyl group, an iso-butyl group, and atert-butyl group, each substituted with at least one of —F, a cyanogroup, and a nitro group; and

groups represented by Formulae 5-1 to 5-45:

In Formulae 5-1 to 5-45 above, * indicates a binding site with anadjacent atom.

In yet other embodiments, R₁ in Formula 1 above may be selected from,but not limited to,

a hydrogen, a methyl group, an ethyl group, an n-propyl group, aniso-propyl group, and an n-butyl group;

a methyl group, an ethyl group, an n-propyl group, and a tert-butylgroup, each substituted with at least one of —F, a cyano group, and anitro group; and

groups represented by Formulae 5-1, 5-2, 5-14, 5-17, and 5-35 to 5-45,above.

In Formula 1 above, a1, which indicates the number of R₁s, may be aninteger of 1 to 3. For example, a1 may be 1, but is not limited thereto.When a1 is an integer of 2 or greater, a plurality of R₁s may beidentical to or different from each other. However, embodiments are notlimited thereto.

In Formula 1 above, R₂ and R₃ may be each independently selected from ahydrogen, a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, aC₁-C₆₀ alkyl group, a C₆-C₆₀ aryl group, a C₂-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group.

In some embodiments, R₂ and R₃ in Formula 1 above may be eachindependently selected from, but not limited to,

a hydrogen, a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group,a methyl group, an ethyl group, an n-propyl group, an iso-propyl group,an n-butyl group, a sec-butyl group, an iso-butyl group, and atert-butyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a benzofluorenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a carbazolyl group,and a triazinyl group.

In Formula 1 above, a2, which indicates the number of R₂s, may be aninteger selected from 0 to 3. For example, a2 may be 0, but is notlimited thereto. When a2 is an integer of 2 or greater, a plurality ofR₂s may be identical to or different from each other. However,embodiments are not limited thereto. When a2 is 0, a ring that would bebound to R₂ may be unsubstituted.

In Formula 1 above, a3, which indicates the number of R₃s, may be aninteger selected from 0 to 5. For example, a3 may be 0, but is notlimited thereto. When a3 is an integer of 2 or greater, a plurality ofR₃s may be identical to or different from each other. When a3 is 0, aring that would be bound to R₃ may be unsubstituted.

In Formula 1 above, m, which indicates the number of moietiesrepresented by

(in which * indicates a binding site with an adjacent atom), may be aninteger selected from 1 to 4. For example, m may be 1 or 2, but is notlimited thereto. When m is an integer of 2 or greater, a plurality ofmoieties represented by

may be identical to or different from each other. However, embodimentsare not limited thereto.

In Formula 1 above, k, which indicates the number of moietiesrepresented by

(in which * indicates a binding site with an adjacent atom), may be aninteger selected from 1 to 4. For example, k may be 2 or 3, but is notlimited thereto. When k is an integer of 2 or greater, a plurality ofmoieties represented by

may be identical to or different from each other. However, embodimentsare not limited thereto.

In some embodiments, the silane-based compound of Formula 1 above may bea compound represented by one of Formulae 1-1 to 1-4 below, but is notlimited thereto:

In Formulae 1-1 to 1-4 above,

L₁₁, L₁₂, L₁₃, L₂₁, L₂₂, L₂₃, and L₂₄ may be each independently the sameas groups defined for defined for L₁ and L₂ in Formula 1 above,

n11, n12, and n13 may be each independently the same as values definedfor n1 in Formula 1 above,

n21 to n24 may be each independently the same as values defined for n2in Formula 1 above,

R₁₁, R₁₂, and R₁₃ may be each independently the same as groups definedfor R₁ in Formula 1 above, and

m1 to m4 may be each independently the same as values defined for m inFormula 1 above.

In some embodiments, the silane-based compound of Formula 1 above may bea compound represented by one of Formulae 1-1 to 1-4 above, in whichL₁₁, L₁₂, L₂₁, L₁₃, L₂₂, L₂₃, and L₂₄ in Formulae 1-1 to 1-4 above maybe each independently a group represented by one of Formulae 4-1 to 4-23above. However, embodiments are not limited thereto.

In some other embodiments, the silane-based compound of Formula 1 abovemay be a compound represented by one of Formulae 1-1 to 1-4 above, inwhich n11, n12, and n13 in Formulae 1-1 to 1-4 above may be eachindependently an integer of 0 or 1. However, embodiments are not limitedthereto.

In still other embodiments, the silane-based compound of Formula 1 abovemay be a compound represented by one of Formula 1-1 to 1-4, in which n21to n24 in Formulae 1-1 to 1-4 above may be each independently an integerof 1 or 2. However, embodiments are not limited thereto.

In yet other embodiments, the silane-based compound of Formula 1 abovemay be a compound represented by one of Formula 1-1 to 1-4, in whichR₁₁, R₁₂, and R₁₃ in Formulae 1-1 to 1-4 may be each independentlyselected from

a hydrogen, a methyl group, an ethyl group, an n-propyl group, aniso-propyl group, and an n-butyl group;

a methyl group, an ethyl group, an n-propyl group, and a tert-butylgroup, each substituted with at least one of —F, a cyano group, and anitro group; and

groups represented by Formulae 5-1, 5-2, 5-14, 5-17, and 5-35 to 5-45,above. However, embodiments are not limited thereto.

In yet still other embodiments, the silane-based compound of Formula 1above may be a compound represented by one of Formulae 1-1 to 1-4 above,wherein m1 to m4 in Formulae 1-1 to 1-4 above may be each independentlyan integer of 1 or 2. However, embodiments are not limited thereto.

In some embodiments, the silane-based compound of Formula 1 above may beone of Compounds 1 to 40 below:

The silane-based compound of Formula 1 above includes at least one“benzocarbazole group” as represented by Formula 1′ below.

Due to the inclusion of the benzocarbazole group as represented byFormula 1′, the silane-based compound of Formula 1 may have highelectrical stability and good charge transport ability.

The silane-based compound of Formula 1 above also may have improved blueemission characteristics and improved hole transport ability, and thusmay be used as a blue emission material. The silane-based compound ofFormula 1 above may also be used as a host along with any of a varietyof phosphorescent or fluorescent dopants for red, green, blue, and whiteemission.

The benzocarbazole group in Formula 1′ may have a relatively rigidstructure, and the silane-based compound of Formula 1 above may have animproved glass transition temperature (Tg). Therefore, an organiclight-emitting device manufactured using the silane-based compound ofFormula 1 may have improved stability of thin layers, and improvedlifetime characteristics.

An organic light-emitting device including the silane-based compoundrepresented by Formula 1 above may also have a high luminance, a highefficiency, a low consumption power, and a long lifetime.

The silane-based compound of Formula 1 may be synthesized using asuitable organic synthesis method. Methods of synthesizing thesilane-based compounds of Formula 1 may be understood by those ofordinary skill in the art based on the examples that will be describedbelow.

The silane-based compound of Formula 1 above may be used between a pairof electrodes of an organic light-emitting device. For example, thesilane-based compound of Formula 1 may be in an emission layer.

According to another embodiment, an organic light-emitting deviceincludes a first electrode, a second electrode disposed opposite to thefirst electrode, and an organic layer disposed between the firstelectrode and the second electrode and including an emission layer,wherein the organic layer includes at least one of the silane-basedcompounds of Formula 1 described above.

As used herein, “(for example, the organic layer) including at least onesilane-based compound means that “(the organic layer) including one ofthe silane-based compounds of Formula 1 above, or at least two differentsilane-based compounds of Formula 1 above”.

In some embodiments, the organic layer may include only Compound 1 aboveas a silane-based compound. In this regard, Compound 1 may be present inthe emission layer of the organic light-emitting device. In someembodiments, the organic layer may include Compounds 1 and 2 assilane-based compounds. In this regard, Compounds 1 and 2 may be presentboth in the same layer (for example, in the emission layer) or may bepresent in different layers (for example, in the emission layer and theelectron transport region, respectively).

The organic layer may further include a hole transport region disposedbetween the first electrode and the emission layer, and the holetransport region may include at least one of a hole injection layer, ahole transport layer, a buffer layer, and an electron blocking layer

The organic layer may further include an electron transport regiondisposed between the emission layer and the second electrode, and theelectron transport region may include at least one of a hole blockinglayer, an electron transport layer, and an electron injection layer.

As used herein, the term “organic layer” refers to a single layer and/ora plurality of layers disposed between the first and second electrodesof the organic light-emitting device. A material in the “organic layer”is not limited to an organic material.

Hereinafter, a structure of an organic light-emitting device accordingto an embodiment and a method of manufacturing the same will now bedescribed with reference to FIG. 1.

FIG. 1 illustrates a schematic sectional view of an organiclight-emitting device 10 according to an embodiment. Referring to FIG.1, the organic light-emitting device 10 includes a first electrode 110,an organic layer 150, and a second electrode 190.

A substrate (not shown) may be disposed under the first electrode 110 oron the second electrode 190 in FIG. 1. The substrate may be a glass ortransparent plastic substrate with good mechanical strength, thermalstability, transparency, surface smoothness, ease of handling, and waterresistance.

For example, the first electrode 110 may be formed by depositing orsputtering a first electrode-forming material on the substrate 11. Whenthe first electrode 110 is an anode, a material having a high workfunction may be used as the first electrode-forming material tofacilitate hole injection. The first electrode 110 may be a reflectiveelectrode, a semi-transmissive electrode, or a transmissive electrode.Transparent and conductive materials such as ITO, IZO, SnO₂, and ZnO maybe used to form the first electrode. The first electrode 110 as asemi-transmissive electrode or a reflective electrode may be formed ofat least one material selected from magnesium (Mg), aluminum (Al),aluminum-lithium (Al—Li), calcium (Ca), magnesium-indium (Mg—In), andmagnesium-silver (Mg—Ag).

The first electrode 110 may have a single-layer structure or amulti-layer structure including a plurality of layers. For example, thefirst electrode 110 may have a three-layered structure of ITO/Ag/ITO,but is not limited thereto.

The organic layer 150 may be disposed on the first electrode 110. Theorganic layer 150 may include an emission layer (EML).

The organic layer 150 may further include a hole transport regiondisposed between the first electrode and the EML. The organic layer 150may further include an electron transport region between the EML and thesecond electrode.

For example, the hole transport region may include at least one of ahole injection layer (HIL), a hole transport layer (HTL), a bufferlayer, and an electron blocking layer (EBL). For example, the electrontransport layer may include at least one of a hole blocking layer (HBL),an electron transport layer (ETL), and an electron injection layer(EIL). However, embodiments are not limited thereto.

The hole transport region may have a single-layered structure includinga single material, a single-layered structure including a plurality ofmaterials, or a multi-layered structure including a plurality of layersincluding different materials.

In some embodiments, the electron transport region may have asingle-layered structure including a plurality of materials, or amulti-layered structure of HIL/HTL, HIL/HTL/buffer layer, HIL/bufferlayer, HTL/buffer layer, or HIL/HTL/EBL, wherein these layers forming amulti-layered structure are sequentially disposed on the first electrode110 in the order stated above. However, embodiments are not limitedthereto.

When the hole transport region includes a HIL, the HIL may be formed onthe first electrode 110 by using any of a variety of methods, forexample, by using vacuum deposition, spin coating, casting,Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing,laser induced thermal imaging (LITI), or the like.

When the HIL is formed using vacuum deposition, the depositionconditions may vary depending on the material that is used to form theHIL and the structure of the HIL. For example, the deposition conditionsmay be selected from the following conditions: a deposition temperatureof about 100° C. to about 500° C., a degree of vacuum of about 10⁻⁸ toabout 10⁻³ torr, and a deposition rate of about 0.01 to 100 Å/sec.

When the HIL is formed using spin coating, the coating conditions mayvary depending on the material that is used to form the HIL and thestructure of the HIL. For example, the coating conditions may beselected from the following conditions: a coating rate of about 2,000rpm to about 5,000 rpm and a heat treatment temperature of about 800° C.to about 200° C.

When the hole transport region includes a HTL, the HTL may be formed onthe first electrode 110 or the HIL by using any of a variety of methods,for example, by using vacuum deposition, spin coating, casting,Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing,laser induced thermal imaging (LITI), or the like. When the HTL isformed using vacuum deposition or spin coating, the conditions fordeposition and coating may be similar to the above-described depositionand coating conditions for forming the HIL, and accordingly will not bedescribed in detail.

In some embodiments, the hole transport region may include at least oneof m-MTDATA, TDATA, 2-TNATA, NPB, β-NPB, TPD, Spiro-TPD, Spiro-NPB,α-NPB, TAPC, HMTPD, 4,4′,4″-tris(N-carbazolyl)triphenylamine (TCTA).polyaniline/dodecylbenzene sulfonic acid (Pani/DBSA),poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate)(PEDOT/PSS),polyaniline/camphor sulfonic acid (Pani/CSA),polyaniline/poly(4-styrenesulfonate) (PANI/PSS), a compound representedby Formula 201 below, and a compound represented by Formula 202 below.

In Formulae 201 and 202,

L₂₀₁ to L₂₀₅ may be each independently selected from a substituted orunsubstituted C₃-C₁₀ cycloalkylene group, a substituted or unsubstitutedC₃-C₁₀ heterocycloalkylene group, a substituted or unsubstituted C₃-C₁₀cycloalkenylene group, a substituted or unsubstituted C₃-C₁₀heterocycloalkenylene group, a substituted or unsubstituted C₆-C₆₀arylene group, a substituted or unsubstituted C₂-C₆₀ heteroarylenegroup, a substituted or unsubstituted divalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted divalent condensedheteropolycyclic group,

at least one substituent of the substituted C₃-C₁₀ cycloalkylene group,the substituted C₃-C₁₀ heterocycloalkylene group, the substituted C₃-C₁₀cycloalkenylene group, the substituted C₃-C₁₀ heterocycloalkenylenegroup, the substituted C₆-C₆₀ arylene group, the substituted C₂-C₆₀heteroarylene group, the substituted divalent non-aromatic condensedpolycyclic group, and the substituted divalent condensedheteropolycyclic group may be selected from

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₃-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —N(Q₂₀₁)(Q₂₀₂),—Si(Q₂₀₃)(Q₂₀₄)(Q₂₀₅), and —B(Q₂₀₆)(Q₂₀₇);

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —N(Q₂₁₁)(Q₂₁₂), —Si(Q₂₁₃)(Q₂₁₄)(Q₂₁₅),and —B(Q₂₂₆)(Q₂₁₇); and

—N(Q₂₂₁)(Q₂₂₂), —Si(Q₂₂₃)(Q₂₂₄)(Q₂₂₅), and —B(Q₂₂₆)(Q₂₂₇),

xa1 to xa4 may be each independently selected from 0, 1, 2, and 3,

xa5 may be selected from 1, 2, 3, 4, and 5,

R₂₀₁ to R₂₀₅ may be each independently selected from

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₃₁-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —N(Q₂₃₁)(Q₂₃₂),—Si(Q₂₃₃)(Q₂₃₄)(Q₂₃₅), and —B(Q₂₃₆)(Q₂₃₇);

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group; and

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₁₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —N(Q₂₄₁)(Q₂₄₂), —Si(Q₂₄₃)(Q₂₄₄)(Q₂₄₅),and —B(Q₂₄₆)(Q₂₄₇), and

Q₂₀₁ to Q₂₀₇, Q₂₁₁ to Q₂₁₇, Q₂₂₁ to Q₂₂₇, Q₂₃₁ to Q₂₃₇, and Q₂₄₁ to Q₂₄₇may be each independently selected from

a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxyl group and a salt thereof, asulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀alkynyl group, and a C₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₃-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group; and

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₂-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group.

In Formulae 201 and 202, L₂₀₁ to L₂₀₅ may be defined as described aboveherein in conjunction with L₁, and R₂₀₁ to R₂₀₅ may be defined asdescribed above herein in conjunction with R₁₁.

For example, in Formulae 201 and 202,

L₂₀₁ to L₂₀₅ may be each independently selected from

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup, each substituted with at least one of a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxyl groupand a salt thereof, a sulfonic acid group and a salt thereof, aphosphoric acid group and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group,

xa1 to xa4 may be each independently 0, 1, or 2,

xa5 may be 1, 2, or 3,

R₂₀₁ to R₂₀₅ may be each independently selected from

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, an azulenyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, but are not limited thereto.

The compound of Formula 201 may be a compound represented by Formula201A below:

For example, the compound of Formula 201 may be a compound representedby Formula 201 A-1, but is not limited thereto:

The compound of Formula 202 may be a compound represented by Formula202A, but is not limited thereto:

In Formulae 201A, 201A-1, and 202A,

L₂₀₁ to L₂₀₃, xa1 to xa3, xa5, and R₂₀₂ to R₂₀₄ may be the same as thosedescribed above herein,

R₂₁₁ may be defined as described above herein in conjunction with R₂₀₃,

R₂₁₃ to R₂₁₆ may be each independently selected from a hydrogen, adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxygroup, a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, aC₃-C₁₀ cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀aryl group, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic hetero-condensed polycyclic group.

For example, in Formulae 201A, 201A-1, and 202A,

L₂₀₁ to L₂₀₃ may be each independently selected from

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup, each substituted with at least one selected from a deuterium, —F,—Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an aminogroup, an amidino group, a hydrazine group, a hydrazone group, acarboxyl group and a salt thereof, a sulfonic acid group and a saltthereof, a phosphoric acid group and a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group,

xa1 to xa3 may be each independently 0 or 1,

R₂₀₃, R₂₁₁, and R₂₁₂ may be each independently selected from

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, aphenanthrenyl group, an anthracenyl group, a pyrenyl group, a chrysenylgroup, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, apyridazinyl group, a quinolinyl group, an isoquinolinyl group, aquinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, each substituted with at least one selected from adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group,

R₂₁₃ and R₂₁₄ may be each independently selected from

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxyl groupand a salt thereof, a sulfonic acid group and a salt thereof, aphosphoric acid group and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group,

R₂₁₅ and R₂₁₆ may be each independently selected from

a hydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxyl group and a salt thereof, asulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof,

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxyl groupand a salt thereof, a sulfonic acid group and a salt thereof, aphosphoric acid group and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, and

xa5 may be 1 or 2.

In Formulae 201A and 201A-1, R₂₁₃ and R₂₁₄ may be linked to each otherto form a saturated or unsaturated ring.

The compound of Formula 201 and the compound of Formula 202 may eachindependently be selected from Compounds Compound HT1 to HT20, but arenot limited thereto.

A thickness of the hole transport region may be from about 100 Å toabout 10000 Å, and in some embodiments, from about 100 Å to about 1000Å. When the hole transport region includes a HIL and a HTL, a thicknessof the HIL may be from about 100 Å to about 10,000 Å, and in someembodiments, from about 100 Å to about 1,000 Å, and a thickness of theHTL may be from about 50 Å to about 2,000 Å, and in some embodiments,from about 100 Å to about 1,500 Å. When the thicknesses of the holetransport region, the HIL, and the HTL are within these ranges,satisfactory hole transport characteristics may be obtained without asubstantial increase in driving voltage.

The hole transport region may further include a charge-generatingmaterial to improve conductivity, in addition to the materials asdescribed above. The charge-generating material may be homogeneously orinhomogeneously dispersed in the hole transport region.

The charge-generating material may be, for example, a p-dopant. Thep-dopant may be one of quinine derivatives, metal oxides, and cyanogroup-containing compounds, but is not limited thereto. Non-limitingexamples of the p-dopant are quinone derivatives such astetracyanoquinonedimethane (TCNQ),2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinonedimethane (F4-TCNQ), andthe like; metal oxides such as tungsten oxide, molybdenum oxide, and thelike; and a Compound HT-D1 below.

The hole transport region may further include at least one of a bufferlayer and an EBL, in addition to the HIL and HTL described above. Thebuffer layer may compensate for an optical resonance distance of lightaccording to a wavelength of the light emitted from the EML, and thusmay improve light-emission efficiency. A material in the buffer layermay be any material used in the hole transport region. The EBL may blockmigration of electrons from the electron transport region into EML.

The EML may be formed on the first electrode 110 or the hole transportregion by using any of a variety of methods, for example, by usingvacuum deposition, spin coating, casting, Langmuir-Blodgett (LB)deposition, inkjet printing, laser printing, laser induced thermalimaging (LITI), or the like. When the EML is formed using vacuumdeposition or spin coating, the deposition and coating conditions forforming the EML may be similar to the above-described deposition andcoating conditions for forming the HIL, and accordingly will not bedescribed in detail

When the organic light-emitting device 10 is a full color organiclight-emitting device, the EML may be patterned into a red emissionlayer, a green emission layer, and a blue emission layer to correspondto individual subpixels, respectively. In some embodiments, the EML mayhave a structure in which a red emission layer, a green emission layerand a blue emission layer are stacked upon one another, or a structureincluding a mixture of a red light-emitting material, a greenlight-emitting material, and a blue light-emitting material withoutseparation of layers for the different color emission, and thus may emitwhite light. In some embodiments, the EMI may be a white EML. In thisregard, the EML may further include a color converting layer or a colorfilter to convert white light into light of a desired color.

The EML may include a host and a dopant.

For example, the host may be a silane-based compound of Formula 1 above.

In some embodiments, the host may include at least one of TPBi, TBADN,ADN, CBP, CDBP, and TCP, in addition to the silane-based compound ofFormula 1 above.

In some other embodiments, the host may include a compound representedby Formula 301.

Ar₃₀₁-[(L₃₀₁)_(xb1)-R₃₀₁]_(xb2)  <Formula 301>

In Formula 301,

Ar₃₀₁ may be selected from

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, an anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group; and

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, an anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkyl group, aC₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₃-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, and —Si(Q₃₀₁)(Q₃₀₂)(Q₃₀₃) (where Q₃₀₁to Q₃₀₃ are each independently selected from a hydrogen, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₆-C₆₀ aryl group, and a C₂-C₆₀heteroaryl group),

L₃₀₁ may be defined as described above herein in conjunction with L₂₀₁,

R₃₀₁ may be selected from

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxyl groupand a salt thereof, a sulfonic acid group and a salt thereof, aphosphoric acid group and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group,

xb1 is selected from 0, 1, 2, and 3;

xb2 is selected from 1, 2, 3, and 4.

For example, in Formula 301,

L₃₀₁ may be selected from

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, and a chrysenylene group; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, and a chrysenylene group, each substitutedwith at least one selected from a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, and a chrysenyl group, and

R₃₀₁ may be selected from

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group, each substituted withat least one of a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxyl group and a salt thereof, asulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, and achrysenyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, and a chrysenyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, and a chrysenyl group,each substituted with at least one selected from a deuterium, —F, —Cl,—Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group,an amidino group, a hydrazine group, a hydrazone group, a carboxyl groupand a salt thereof, a sulfonic acid group and a salt thereof, aphosphoric acid group and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, and achrysenyl group. However, embodiments are not limited thereto.

The compound of Formula 301 may include at least one of Compounds H1 toH42. However, embodiments are not limited thereto:

In some other embodiments, the host may include at least one ofCompounds H43 to H49, but is not limited thereto:

The dopant for the EML may include at least one of a fluorescent dopantand a phosphorescent dopant.

The phosphorescent dopant may include an organic metal complexrepresented by Formula 401 below:

In Formula 401,

M may be selected from iridium (Ir), platinum (Pt), osmium (Os),titanium (Ti), zirconium (Zr), halfnium (Hf), europium (Eu), terbium(Tb), and thulium (Tm),

X₄₀₁ to X₄₀₄ may be each independently a nitrogen or a carbon,

A₄₀₁ and A₄₀₂ ring may be each independently selected from a substitutedor unsubstituted benzene group, a substituted or unsubstitutednaphthalene group, a substituted or unsubstituted fluorene group, asubstituted or unsubstituted spiro-fluorene group, a substituted orunsubstituted indene group, a substituted or unsubstituted pyrrolegroup, a substituted or unsubstituted thiophene group, a substituted orunsubstituted furan group, a substituted or unsubstituted imidazolegroup, a substituted or unsubstituted pyrazole group, a substituted orunsubstituted thiazole group, a substituted or unsubstituted isothiazolegroup, a substituted or unsubstituted oxazole group, a substituted orunsubstituted isooxazole group, a substituted or unsubstituted pyridinegroup, a substituted or unsubstituted pyrazine group, a substituted orunsubstituted pyrimidine group, a substituted or unsubstitutedpyridazine group, a substituted or unsubstituted quinoline group, asubstituted or unsubstituted isoquinoline group, a substituted orunsubstituted benzoquinoline group, a substituted or unsubstitutedquinoxaline group, a substituted or unsubstituted quinazoline group, asubstituted or unsubstituted carbazole group, a substituted orunsubstituted benzoimidazole group, a substituted or unsubstitutedbenzofuran group, a substituted or unsubstituted benzothiophene group, asubstituted or unsubstituted isobenzothiophene group, a substituted orunsubstituted benzoxazole group, a substituted or unsubstitutedisobenzoxazole group, a substituted or unsubstituted triazole group, asubstituted or unsubstituted oxadiazole group, a substituted orunsubstituted triazine group, a substituted or unsubstituteddibenzofuran group, and a substituted or unsubstituted dibenzothiophenegroup,

at least one substituent of the substituted benzene group, thesubstituted naphthalene group, the substituted fluorene group, thesubstituted spiro-fluorene group, the substituted indene group, thesubstituted pyrrole group, the substituted thiophene group, thesubstituted furan group, the substituted imidazole group, thesubstituted pyrazole group, the substituted thiazole group, thesubstituted isothiazole group, the substituted oxazole group, thesubstituted isooxazole group, the substituted pyridine group, thesubstituted pyrazine group, the substituted pyrimidine group, thesubstituted pyridazine group, the substituted quinoline group, thesubstituted isoquinoline group, the substituted benzoquinoline group,the substituted quinoxaline group, the substituted quinazoline group,the substituted carbazole group, the substituted benzoimidazole group,the substituted benzofuran group, the substituted benzothiophene group,the substituted isobenzothiophene group, the substituted benzoxazolegroup, the substituted isobenzoxazole group, the substituted triazolegroup, the substituted oxadiazole group, the substituted triazine group,the substituted dibenzofuran group, and the substituted dibenzothiophenegroup may be selected from

a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one of adeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₃-C₁₀cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —N(Q₄₀₁)(Q₄₀₂),—Si(Q₄₀₃)(Q₄₀₄)(Q₄₀₅), and —B(Q₄₀₆)(Q₄₀₇);

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₂-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkylgroup, a C₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, aC₃-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxygroup, a C₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —N(Q₄₁₁)(Q₄₁₂), —Si(Q₄₁₃)(Q₄₁₄)(Q₄₁₅),and —B(Q₄₁₆)(Q₄₁₇); and

—N(Q₄₂₁)(Q₄₂₂), —Si(Q₄₂₃)(Q₄₂₄)(Q₄₂₅), and —B(Q₄₂₆)(Q₄₂₇),

L₄₀₁ may be an organic ligand,

xc1 may be 1, 2, or 3, and

xc2 may be 0, 1, 2, or 3.

For example, L₄₀₁ may be a monovalent, divalent, or trivalent organicligand. For example, L₄₀₁ may be selected from a halogen ligand (forexample, Cl or F), a diketone ligand (for example, acetylacetonate,1,3-diphenyl-1,3-propanedionate, 2,2,6,6-tetramethyl-3,5-heptanedionate,or hexafluoroacetonate), a carboxylic acid ligand (for example,picolinate, dimethyl-3-pyrazole carboxylate, or benzoate), a carbonmonoxide ligand, an isonitrile ligand, a cyano ligand, and a phosphorousligand (for example, phosphine or phosphaite), but is not limitedthereto

When A₄₀₁ in Formula 401 has at least two substituents, the at least twosubstituents of A₄₀₁ may be linked to each other to form a saturated orunsaturated ring.

When A₄₀₂ in Formula 401 has at least two substituents, the at least twosubstituents of A₄₀₂ may be linked to each other to form a saturated orunsaturated ring.

When xc1 in Formula 401 is 2 or greater, the plurality of ligands inFormula 401, represented by

may be identical to or different from each other. When xc1 in Formula401 is 2 or greater, A₄₀₁ and A₄₀₂ may be linked to A₄₀₁ and A₄₀₂ ofanother adjacent ligand directly or via a linker (for example, a C₁-C₅alkylene group, —N(R′)— (where R′ is a C₁-C₁₀ alkyl group or a C₆-C₂₀aryl group), or —C(═O)—).

The phosphorescent dopant may include at least one of Compounds PD1 toPD74, but is not limited thereto:

In some embodiments, the phosphorescent dopant may include PtOEP below:

The fluorescent dopant may include at least one of DPAVBi, BDAVBi, TBPe,DMC, DCJTB, Courmarin 6, and a C545T below

For example, the fluorescent dopant may include a compound representedby Formula 501 below:

In Formula 501,

Ar₅₀₁ may be selected from

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, an anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group; and

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, an anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkyl group, aC₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₃-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, and —Si(Q₅₀₁)(Q₅₀₂)(Q₅₀₃) (where Q₅₀₁to Q₅₀₃ are each independently selected from a hydrogen, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₆-C₆₀ aryl group, and a C₂-C₆₀heteroaryl group);

L₅₀₁ to L₅₀₃ may be defined as described above herein in conjunctionwith L₂₀₁;

R₅₀₁ and R₅₀₂ may be each independently selected from

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazole group, a triazinyl group, adibenzofuranyl group, and a dibenzothiophenyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, and adibenzofuranyl group, and a dibenzothiophenyl group, each substitutedwith at least one selected from a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, adibenzofuranyl group, and a dibenzothiophenyl group,

xd1 to xd3 are each independently selected from 0, 1, 2, and 3, and

xb4 is selected from 1, 2, 3, and 4.

For example, the fluorescent dopant may include at least one ofCompounds FD1 to FD8:

An amount of the dopant in the EML may be from about 0.01 parts to about15 parts by weight based on 100 parts by weight of the host, but is notlimited to this range.

A thickness of the EML may be about 100 Å to about 1000 Å, and in someembodiments, may be from about 200 Å to about 600 Å. When the thicknessof the EML is within these ranges, the EML may have good light emittingability without a substantial increase in driving voltage.

Next, the electron transport region may be formed on the EML.

The electron transport region may include at least one of a HBL, an ETL,and an EIL. However, embodiments are not limited thereto.

In some embodiments, the electron transport region may have a structureincluding an ETL/EIL or a HBL/ETL/EIL, wherein the layers forming astructure of the electron transport region may be sequentially stackedon the EML in the order stated above. However, embodiments are notlimited thereto.

The electron transport region may include a HBL. When the EML includes aphosphorescent dopant, the HBL may prevent diffusion of triplet exitonsor holes into the ETL from the EML.

When the electron transport region includes a HBL, the HBL may be formedon the EML by using any of a variety of methods, for example, by usingvacuum deposition, spin coating, casting, Langmuir-Blodgett (LB)deposition, inkjet printing, laser printing, laser induced thermalimaging (LITI), or the like. When the HBL is formed using vacuumdeposition or spin coating, the deposition and coating conditions forforming the HBL may be similar to the above-described deposition andcoating conditions for forming the HIL, and accordingly will not bedescribed in detail.

For example, the HBL may include at least one of BCP below and Bphenbelow. However, embodiments are not limited thereto.

A thickness of the HBL may be from about 20 Å to about 1,000 Å, and insome embodiments, from about 30 Å to about 300 Å. When the thickness ofthe HBL is within these ranges, the HBL may have improved hole blockingability without a substantial increase in driving voltage.

The electron transport region may include an ETL. The ETL may be formedon the EML or the HBL by using any of a variety of methods, for example,by using vacuum deposition, spin coating, casting, Langmuir-Blodgett(LB) deposition, inkjet printing, laser printing, laser induced thermalimaging (LITI), or the like. When the ETL is formed using vacuumdeposition or spin coating, the deposition and coating conditions forforming the ETL may be similar to the above-described deposition andcoating conditions for forming the HIL, and accordingly will not bedescribed in detail.

The ETL may further include at least one of BCP, Bphen, Alq₃, Balq, TAZ,and NTAZ below.

In some embodiments, the ETL may include at least one of compoundsrepresented by Formula 601

below

Ar₆₀₁-[(L₆₀₁)_(xe1)-E₆₀₁]_(xe2)  <Formula 601>

In Formula 601,

Ar₆₀₁ may be selected from

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, an anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group;

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, an anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group, each substituted withat least one selected from a deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkyl group, aC₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₃-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₂-C₆₀ hetero aryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, and —Si(Q₃₀₁)(Q₃₀₂)(Q₃₀₃) (where Q₃₀₁to Q₃₀₃ are each independently selected from a hydrogen, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₆-C₆₀ aryl group, and a C₁-C₆₀heteroaryl group),

L₆₀₁ may be defined as described above herein in conjunction with L₂₀₁,

E₆₀₁ may be selected from

a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, and a dibenzocarbazolyl group; and

a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isooxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzooxazolyl group, an isobenzooxazolylgroup, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, atriazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, and a dibenzocarbazolyl group, each substitutedwith at least one of a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxyl group and a salt thereof,a sulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenylgroup, a pentalenyl group, an indenyl group, a naphthyl group, anazulenyl group, a heptalenyl group, an indacenyl group, an acenaphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenylgroup, an anthracenyl group, a fluoranthenyl group, a triphenylenylgroup, a pyrenyl group, a chrysenyl group, a naphthacenyl group, apicenyl group, a perylenyl group, a pentaphenyl group, a hexacenylgroup, a pentacenyl group, a rubicenyl group, a coroneryl group, anobarenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group,an imidazolyl group, a pyrazolyl group, a thiazolyl group, anisothiazolyl group, an oxazolyl group, an isooxazolyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, anisoindolyl group, an indolyl group, an indazolyl group, a purinyl group,a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a carbazolyl group, aphenanthridinyl group, an acridinyl group, a phenanthrolinyl group, aphenazinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzooxazolylgroup, an isobenzooxazolyl group, a triazolyl group, a tetrazolyl group,an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, and adibenzocarbazolyl group,

xe1 may be selected from 0, 1, 2, and 3, and

xe2 may be selected from 1, 2, 3, and 4.

In some other embodiments, the ETL may include at least one of Compoundsrepresented by Formula 602 below:

In Formula 602,

X₆₁₁ may be N or C-(L₆₁₁)_(xe611)-R₆₁₁, X₆₁₂ may be N orC-(L₆₁₂)_(xe612)-R₆₁₂, X₆₁₃ may be N or C-(L₆₁₃)_(xe613)-R₆₁₃, at leastone of X₆₁₁ to X₆₁₃ may be N,

L₆₁₁ to L₆₁₆ may be defined as described above in conjunction L₂₀₁,

R₆₁₁ to R₆₁₆ may be each independently selected from

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one of a deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxyl group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, an azulenyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, and

xe611 to xe616 may be each independently selected from, 0, 1, 2, and 3.

The compound of Formula 601 and the compound of Formula 602 may eachindependently include at least one of Compounds ET1 to ET15 illustratedbelow.

A thickness of the ETL may be from about 100 Å to about 1,000 Å, and insome embodiments, from about 150 Å to about 500 Å. When the thickness ofthe ETL is within these ranges, the ETL may have satisfactory electrontransporting ability without a substantial increase in driving voltage.

In some embodiments the ETL may further include a metal-containingmaterial, in addition to the above-described materials.

The metal-containing material may include a lithium (Li) complex.Non-limiting examples of the Li complex are compound ET-D1 below(lithium quinolate (LiQ)), and compound ET-D2 below.

The electron transport region may include an EIL that may facilitateinjection of electrons from the second electrode 190.

The EIL may be formed on the ETL by using any of a variety of methods,for example, by using vacuum deposition, spin coating, casting,Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing,laser induced thermal imaging (LITI), or the like. When the EIL isformed using vacuum deposition or spin coating, the deposition andcoating conditions for forming the EIL may be similar to theabove-described deposition and coating conditions for forming the HIL,and accordingly will not be described in detail.

The EIL may include at least one selected from LiF, NaCl, CsF, Li₂O,BaO, and LiQ.

A thickness of the EIL may be from about 1 Å to about 100 Å, and in someembodiments, from about 3 Å to about 90 Å. When the thickness of the EILis within these ranges, the EIL may have satisfactory electron injectionability without a substantial increase in driving voltage.

The second electrode 190 may be disposed on the organic layer 150, asdescribed above. The second electrode 190 may be a cathode as anelectron injecting electrode. A material for forming the secondelectrode 190 may be a metal, an alloy, an electrically conductivecompound, which have a low-work function, or a mixture thereof.Non-limiting examples of materials for forming the second electrode 190are lithium (Li), magnesium (Mg), aluminum (Al), aluminum-lithium(Al—Li), calcium (Ca), magnesium-indium (Mg—In), and magnesium-silver(Mg—Ag). In some embodiments, a material for forming the secondelectrode 190 may be ITO or IZO. The second electrode 190 may be areflective electrode, a semi-transmissive electrode, or a transmissiveelectrode.

Although the organic light-emitting device of FIG. 1 is described above,embodiments are not limited thereto.

As used herein, a C₁-C₆₀ alkyl group refers to a linear or branchedaliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms.Non-limiting examples of the C₁-C₆₀ alkyl group, a methyl group, a ethylgroup, a propyl group, an isobutyl group, a sec-butyl group, atert-butyl group, a pentyl group, an iso-amyl group, and a hexyl group.A C₁-C₆₀ alkylene group refers to a divalent group having the samestructure as the C₁-C₆₀ alkyl.

As used herein, a C₁-C₆₀ alkoxy group refers to a monovalent grouprepresented by -OA₁₀₁ (where A₁₀₁ is a C₁-C₆₀ alkyl group, as describedabove. Non-limiting examples of the C₁-C₆₀ alkoxy group, are a methoxygroup, an ethoxy group, and an isopropyloxy group.

As used herein, a C₂-C₆₀ alkenyl group has a structure including atleast one carbon double bond in the middle or terminal of the C₂-C₆₀alkyl group. Non-limiting examples of the C₂-C₆₀ alkenyl group, are anethenyl group, a prophenyl group, and a butenyl group. A C₂-C₆₀ alkylenegroup refers to a divalent group having the same structure as the C₂-C₆₀alkenyl group.

As used herein, a C₂-C₆₀ alkynyl group has a structure including atleast one carbon triple bond in the middle or terminal of the C₂-C₆₀alkyl group. Non-limiting examples of the C₂-C₆₀ alkynyl group are anethynyl group, and a propynyl group. A C₂-C₆₀ alkynylene group usedherein refers to a divalent group having the same structure as theC₂-C₆₀ alkynyl group.

As used herein, a C₃-C₁₀ cycloalkyl group refers to a monovalent,monocyclic hydrocarbon group having 3 to 10 carbon atoms. Non-limitingexamples of the C₃-C₁₀ cycloalkyl group, are a cyclopropyl group, acyclobutyl group, a cyclopentyl group, a cyclohexyl group, and acycloheptyl group. A C₃-C₁₀ cycloalkylene group refers to a divalentgroup having the same structure as the C₃-C₁₀ cycloalkyl group.

As used herein, a C₃-C₁₀ heterocycloalkyl group refers to a monovalentmonocyclic group having 3 to 10 carbon atoms in which at least onehetero atom selected from N, O, P, and S is included as a ring-formingatom. Non-limiting examples of the C₃-C₁₀ heterocycloalkyl group, are atetrahydrofuranyl group, and a terrahydrothiophenyl group. A C₃-C₁₀heterocycloalkylene group refers to a divalent group having the samestructure as the C₃-C₁₀ heterocycloalkyl group.

As used herein, a C₃-C₁₀ cycloalkenyl group refers to a monovalentmonocyclic group having 3 to 10 carbon atoms that includes at least onedouble bond in the ring but does not have aromaticity. Non-limitingexamples of the C₃-C₁₀ cycloalkenyl group, are a cyclopentenyl group, acyclohexenyl group, and a cycloheptenyl group. A C₃-C₁₀ cycloalkenylenegroup refers to a divalent group having the same structure as the C₃-C₁₀cycloalkenyl group.

As used herein, a C₃-C₁₀ heterocycloalkenyl group used herein refers toa monovalent monocyclic group having 3 to 10 carbon atoms that includesat least one double bond in the ring and in which at least one heteroatom selected from N, O, P, and S is included as a ring-forming atom.Non-limiting examples of the C₃-C₁₀ heterocycloalkenyl group, are a2,3-hydrofuranyl group, and a 2,3-hydrothiophenyl group. A C₃-C₁₀heterocycloalkenylene group used herein refers to a divalent grouphaving the same structure as the C₃-C₁₀ heterocycloalkenyl group.

As used herein, a C₆-C₆₀ aryl group refers to a monovalent, aromaticcarbocyclic aromatic group having 6 to 60 carbon atoms, and a C₆-C₆₀arylene group refers to a divalent, aromatic carbocyclic group having 6to 60 carbon atoms. Non-limiting examples of the C₆-C₆₀ aryl group are aphenyl group, a naphthyl group, an anthracenyl group, a phenanthrenylgroup, a pyrenyl group, and a chrysenyl group. When the C₆-C₆₀ arylgroup, and the C₆-C₆₀ arylene group include at least two rings, therings may be fused to each other.

As used herein, a C₂-C₆₀ heteroaryl group refers to a monovalent,aromatic carbocyclic aromatic group having 2 to 60 carbon atoms in whichat least one hetero atom selected from N, O, P, and S is included as aring-forming atom, and 2 to 60 carbon atoms. A C₂-C₆₀ heteroarylenegroup refers to a divalent, aromatic carbocyclic group having 2 to 60carbon atoms in which at least one hetero atom selected from N, O, P,and S is included as a ring-forming atom. Non-limiting examples of theC₂-C₆₀ heteroaryl group are a pyridinyl group, a pyrimidinyl group, apyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinylgroup, and an isoquinolinyl group. When the C₂-C₆₀ heteroaryl and theC₂-C₆₀ heteroarylene include at least two rings, the rings may be fusedto each other.

As used herein, a C₆-C₆₀ aryloxy group indicates —OA₁₀₂ (where A₁₀₂ is aC₆-C₆₀ aryl group, as described above), and a C₆-C₆₀ arylthio groupindicates —SA₁₀₃ (where A₁₀₃ is a C₆-C₆₀ aryl group, as describedabove).

As used herein, a monovalent non-aromatic condensed polycyclic grouprefers to a monovalent group that includes at least two rings condensedto each other and includes only carbon atoms as ring-forming atoms andthat represents non-aromaticity as a whole. An example of the monovalentnon-aromatic condensed polycyclic group is a fluorenyl group. As usedherein, a divalent non-aromatic condensed polycyclic group refers to adivalent group with the same structure as the monovalent non-aromaticcondensed polycyclic group.

As used herein, a monovalent non-aromatic condensed heteropolycyclicgroup refers to a monovalent group that includes at least two ringscondensed to each other and include carbon and hetero atoms selectedfrom N, O, P and S as ring-forming atoms and that representsnon-aromaticity as a whole. An example of the monovalent non-aromaticcondensed heteropolycyclic group is a carbazolyl group. As used herein,a divalent non-aromatic condensed heteropolycyclic group refers to adivalent group with the same structure as the monovalent non-aromaticcondensed polycyclic group.

The acronym “Ph” used herein refers to phenyl, the acronym “Me” usedherein refers to methyl, the acronym “Et” used herein refers to ethyl,and the acronym “tert-Bu” or “Bu” used herein refers to a tert-butyl orbutyl.

One or more embodiments, which include silane-based compounds, andorganic light-emitting devices including the same, will now be describedin detail with reference to the following examples. In the followingexamples, the expression that “‘B’ instead of ‘A’ was used” means thatthe amounts of ‘B’ and ‘A’ were the same in equivalent amounts.

The following Examples and Comparative Examples are provided in order tohighlight characteristics of one or more embodiments, but it will beunderstood that the Examples and Comparative Examples are not to beconstrued as limiting the scope of the embodiments, nor are theComparative Examples to be construed as being outside the scope of theembodiments. Further, it will be understood that the embodiments are notlimited to the particular details described in the Examples andComparative Examples.

EXAMPLES Synthesis Example 1 Synthesis of Compound 2

1) Synthesis of Intermediate A

1.91 g (10 mmol) of benzocarbazole, 5.90 g (25 mmol) of1,4-dibromobenzene, 381 mg (2 mmol) of CuI, 5.53 g (40 mmol) of K₂CO₃,and 53 mg (0.2 mmol) of 18-crown-6 were dissolved in 50 mL of1,3-dimethyl-3,4,5,6-tetrahydro-(1H)-pyrimidinone (DMPU) to obtain asolution, which was then heated at about 170° C. for about 8 hours. Theresulting reaction mixture was cooled down to room (ambient)temperature, and then filtered to remove a solid material, following byadding a small amount of ammonia water to the resulting filtrate andthen washing three times with 30 mL of diethylether. The washeddiethylether layer was collected and dried using MgSO₄, and dried undera reduced pressure to obtain a crude product, which was then purifiedusing silica gel column chromatography to obtain about 2.42 g (Yield:70%) of Intermediate A as white solid. This compound was identifiedusing liquid chromatography-mass spectroscopy (LC-MS). C₂₀H₁₂BrN: M+346.0

2) Synthesis of Compound 2

3.64 g (10.5 mmol) of Intermediate A was dissolved in 30 mL oftetrahydrofuran (THF), and 4.64 mL (11.6 mmol) of n-BuLi (2.5 M inhexane) was slowly dropwise added thereto at about −78° C. 1.05 mL (5.0mmol) of dichlorophenylsilane was added to the reaction mixture, andthen stirred at room temperature for about 5 hours. After completion ofthe reaction, 2 mL of an ammonium hydroxide solution was added to thereaction mixture, and then stirred for about 1 hour, followed byextraction with 50 mL of ethyl acetate three times. An ethyl acetatelayer was collected, and dried using magnesium sulfate, followed byevaporating the solvent. The resulting residue was dissolved in a mixedsolvent of ethyl acetate and n-hexane (in a volume ratio of 1:4), andthen filtered to remove undissolved solid, thereby obtaining about 2.32g (Yield: 65%) of Compound 2 as white solid. This compound wasidentified using mass spectroscopy/fast atom bombardment (MS/FAB) and ¹Hnuclear magnetic resonance (NMR).

C₅₂H₃₄N₂Si: cal. 714.25, found 715.30

¹H NMR (400 MHz, CDCl₃) δ (ppm) 7.77 (d, 4H), 7.66 (d, 4H), 7.59 (d,4H), 7.54 (s, 4H), 7.51-7.44 (m, 8H), 7.33-7.22 (m, 10H)

Synthesis Example 2 Synthesis of Compound 3

3.52 g (Yield: 58%) of Compound 3 as white solid 8 was synthesized insubstantially the same manner as in the synthesis of Compound 2, exceptthat trichorophenylsilane, instead of dichlorodiphenylsilane, was used.This compound was identified using MS/FAB and ¹H NMR.

C₅₆H₄₁N₃Si: cal. 903.31, found 904.14

¹H NMR (400 MHz, CDCl₃) δ (ppm) 7.77 (d, 6H), 7.66 (d, 6H) 7.62 (d, 2H),7.54 (s, 6H), 7.51-7.44 (m, 12H), 7.33-7.28 (m, 2H), 7.24 (m, 7H)

Synthesis Example 3 Synthesis of Compound 7

1) Synthesis of Intermediate B

4.14 g (20 mmol) of 2-bromonaphthalene was dissolved in 30 mL oftetrahydrofuran (THF), and 8.4 mL (21 mmol) of n-BuLi (2.5 M in hexane)was slowly dropwise added thereto at about −78° C., and stirred forabout 1 hour. After 1.13 mL (10 mmol) of SiCl₄ was added to the reactionmixture, the resultant mixture was stirred at room temperature for 5hours and then water was added thereto, followed by washing with 30 mLof diethylether three times. The washed diethylether layer wascollected, was dried using MgSO₄, and dried in a reduced pressure toobtain a crude product, which was then purified using silica gel columnchromatography to obtain about 2.12 g (Yield: 60%) of Intermediate B aswhite oil. This compound was identified using LC-MS. C₂₀H₁₄Cl₂Si:M+353.0

2) Synthesis of Compound 7

3.64 g (10.5 mmol) of Intermediate A was dissolved in 30 mL oftetrahydrofuran (THF), and 4.64 mL (11.6 mmol) of n-BuLi (2.5 M inhexane) was slowly dropwise added thereto at about −78° C. 1.77 g (5.0mmol) of Intermediate B was added to the reaction mixture, and thenstirred at room temperature for about 5 hours. After completion of thereaction, 2 mL of an ammonium hydroxide solution was added to thereaction mixture, and then stirred for about 1 hour, followed byextraction with 50 mL of ethyl acetate three times. An ethyl acetatelayer was collected and dried using magnesium sulfate, followed byevaporating the solvent. The resulting residue was purified using silicagel column chromatography to obtain 2.93 g (Yield: 72%) of Compound 7 aswhite solid. This compound was identified using MS/FAB and ¹H NMR.

C₆₀H₃₈N₂Si: cal. 814.28, found 815.12

¹H NMR (400 MHz, CDCl₃) δ (ppm) 8.14 (m, 2H), 7.85 (d, 2H), 7.79-7.74(m, 12H), 7.60-7.55 (m, 4H), 7.54 (s, 4H), 7.51-7.44 (m, 8H), 7.40-7.35(m, 2H), 7.24 (d, 4H)

Synthesis Example 4 Synthesis of Compound 10

1) Synthesis of Intermediate C

Intermediate C was synthesized in substantially the same manner as inthe synthesis of Intermediate C, except that 1-bromonaphthalene, insteadof 2-bromonaphthalene, was used. This compound was identified usingLC-MS.

C₂₀H₁₄Cl₂Si: M+ 353.0

Synthesis of Compound 10

2.69 g (Yield: 66%) of Compound 10 as while solid was synthesized insubstantially the same manner as in the synthesis of Compound 7, exceptthat Intermediate C, instead of intermediate B, was used. This compoundwas identified using MS/FAB and ¹H NMR.

C₆₀H₃₈N₂Si: cal. 814.28, found 815.33

¹H NMR (400 MHz, CDCl₃) δ (ppm) 7.77 (d, 8H), 7.68 (d, 21), 7.64 (d,2H), 7.54 (s, 4H), 7.51-7.36 (m, 12H), 7.27 (d, 6H), 6.69 (d, 4H)

Synthesis Example 5 Synthesis of Compound 22

1) Synthesis of Intermediate D

1.91 g (10 mmol) of benzocarbazole, 1.57 g (5 mmol) of1,3,5-tribromobenzene, 381 mg (2 mmol) of CuI, 5.53 g (40 mmol) ofK₂CO₃, and 53 mg (0.2 mmol) of 18-crown-6 were dissolved in 50 mL of1,3-dimethyl-3,4,5,6-tetrahydro-(1H)-pyrimidinone (DMPU) to obtain asolution, which was then heated at about 170° C. for about 8 hours. Theresulting reaction mixture was cooled down to room temperature, and thenfiltered to remove a solid material, following by adding a small amountof ammonia water to the resulting filtrate and then washing three timeswith 30 mL of diethylether. The washed diethylether layer was driedusing MgSO₄, and dried in a reduced pressure to obtain a crude product,which was then purified using silica gel column chromatography to obtainabout 0.80 g (Yield: 30%) of Intermediate D as white solid. Thiscompound was identified using LC-MS. C₃₄H₁₉BrN₂: M+ 535.1

Synthesis of Compound 22

5.62 g (10.5 mmol) of Intermediate D was dissolved in 30 mL oftetrahydrofuran (THF), and 4.64 mL (11.6 mmol) of n-BuLi (2.5 M inhexane) was slowly dropwise added thereto at about −78° C. 0.60 mL (5.0mmol) of dichlorodimethylsilane was added to the reaction mixture, andthen stirred at room temperature for about 5 hours. After completion ofthe reaction, 2 mL of an ammonium hydroxide solution was added to thereaction mixture, and then stirred for about 1 hour, followed byextraction with 50 mL of ethyl acetate three times. An ethyl acetatelayer was collected and dried using magnesium sulfate, followed byevaporating the solvent. The resulting residue was purified using silicagel column chromatography to obtain 2.57 g (Yield: 53%) of Compound 22as white solid. This compound was identified using MS/FAB and ¹H NMR.C₇₀H₄₄N4Si: cal. 968.33, found 969.21

¹H NMR (400 MHz, CDCl₃) δ (ppm) 7.77 (d, 8H), 7.54 (s, 8H), 7.51-7.45(m, 16H), 7.32 (s, 4H), 7.20 (s, 2H), 0.34 (s, 6H)

Synthesis Example 6 Synthesis of Compound 24

3.36 g (Yield: 64%) of Compound 24 as a white solid was synthesized insubstantially the same manner as in the synthesis of Compound 22, exceptthat dichorodiphenylsilane, instead of dichlorodimethylsilane, was used.This compound was identified using MS/TAB and ¹H NMR.

C₈₀H₄₈N₄Si: cal. 1092.36, found 1093.35

¹H NMR (400 MHz, CDCl₃) δ (ppm) 7.89 (d, 4H), 7.77 (d, 8H), 7.61 (s,4H), 7.54 (s, 8H), 7.50-7.45 (m, 16H), 7.34 (t, 4H), 7.26-7.22 (m, 4H)

Example 1

To manufacture an anode, a Corning glass substrate (with ITO, Ag, andITO layers having a thickness of about 70 Å, about 1,000 Å, and about 70Å, respectively), was cut to a size of 50 mm×50 mm×0.5 mm and thensonicated in isopropyl alcohol and pure water each for five minutes, andthen cleaned by irradiation of ultraviolet rays for 30 minutes andexposure to ozone. The resulting ITO/Ag/ITO substrate was mounted into avacuum deposition device.

After 2-TNATA was vacuum-deposited on the anode to form an HIL having athickness of 600 Å, NPB was deposited on the HIL to form a HTL having athickness of about 300 Å, and then Compound 2 (host) above and DPAVBi(dopant) below were co-deposited in a weight ratio of 91:9 on the HTL toform an EML having a thickness of about 250 Å.

BCP was deposited on the EML to form a hole blocking layer (HBL) havinga thickness of about 50 Å, and then Alq3 was deposited on the HBL toform an electron transport layer (ETL) having a thickness of about 350Å. LiF was deposited on the ETL to form an EIL having a thickness ofabout 10 Å, and Mg and Al was vacuum-deposited in a ratio of about 90:10on the EIL to form a cathode having a thickness of about 160 Å, therebycompleting the manufacture of an organic light-emitting device.

Example 2

An organic light-emitting device was manufactured in substantially thesame manner as in Example 1, except that Compound 3, instead of Compound2, was used to form the EML.

Example 3

An organic light-emitting device was manufactured in substantially thesame manner as in Example 1, except that Compound 7, instead of Compound2, was used to form the EML.

Example 4

An organic light-emitting device was manufactured in substantially thesame manner as in Example 1, except that Compound 10, instead ofCompound 2, was used to form the EML.

Example 5

An organic light-emitting device was manufactured in substantially thesame manner as in Example 1, except that Compound 22, instead ofCompound 2, was used to form the EML.

Example 6

An organic light-emitting device was manufactured in substantially thesame manner as in Example 1, except that Compound 24, instead ofCompound 2, was used to form the EML.

Comparative Example 1

An organic light-emitting device was manufactured in substantially thesame manner as in Example 1, except that CBP below, instead of Compound2, was used to form the EML.

Comparative Example 2

An organic light-emitting device was manufactured in the same manner asin Example 1, except that Compound A below, instead of Compound 2, wasused to form the EML.

Comparative Example 3

An organic light-emitting device was manufactured in the same manner asin Example 1, except that Compound B below, instead of Compound 2, wasused to form the EML.

Evaluation Example 1

Driving voltages, current densities, luminances, efficiencies, andhalf-lifetimes of the organic light-emitting devices of Examples 1 to 6and Comparative Examples 1 to 3 were evaluated using a KethleySource-Measure Unit (SMU 236) and a PR650 (Spectroscan) SourceMeasurement Unit (available from Photo Research, Inc). The results areshown in Table 1, below. A half-lifetime was measured as the time takenuntil a measured initial luminance (assumed as 100%) was reduced to50%).

TABLE 1 Driving Current Half lifetime voltage density LuminanceEfficiency Emission (hr Example EML host (V) (mA/cm²) (cd/m²) (cd/A)color @100 mA/cm²) Example 1 Compound 2 6.5 10 4,820 48.2 Green 74Example 2 Compound 3 6.0 10 5,230 52.3 Green 69 Example 3 Compound 7 6.210 4,950 49.5 Green 125 Example 4 Compound 10 6.1 10 4,760 47.6 Green130 Example 5 Compound 22 5.9 10 5,120 51.2 Green 110 Example 6 Compound24 6.2 10 4,320 43.2 Green 80 Comparative CBP 6.5 10 3,210 32.1 Green 32Example 1 Comparative Compound A 6.3 10 3,820 38.2 Green 45 Example 2Comparative Compound B 6.3 10 3,950 39.5 Green 50 Example 3

Referring to Table 1, the organic light-emitting devices of Examples 1to 6 were found to have improved luminances, improved efficiencies, andimproved half-lifetimes, compared to those of the organic light-emittingdevices of Comparative Examples 1 to 3.

As described above, according to the one or more of the aboveembodiments, an organic light-emitting device including a silane-basedcompound of Formula 1 may have a high luminance, a high efficiency, alow consumption power, and an improved lifetime.

Example embodiments have been disclosed herein, and although specificterms are employed, they are used and are to be interpreted in a genericand descriptive sense only and not for purpose of limitation. In someinstances, as would be apparent to one of ordinary skill in the art asof the filing of the present application, features, characteristics,and/or elements described in connection with a particular embodiment maybe used singly or in combination with features, characteristics, and/orelements described in connection with other embodiments unless otherwisespecifically indicated. Accordingly, it will be understood by those ofskill in the art that various changes in form and details may be madewithout departing from the spirit and scope of the present invention asset forth in the following claims.

What is claimed is:
 1. A silane-based compound represented by Formula 1:

wherein, in Formula 1, L₁ and L₂ are each independently selected from asubstituted or unsubstituted C₃-C₁₀ cycloalkylene group, a substitutedor unsubstituted C₁-C₁₀ heterocycloalkylene group, a substituted orunsubstituted C₃-C₁₀ cycloalkenylene group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenylene group, a substituted orunsubstituted C₆-C₆₀ arylene group, a substituted or unsubstitutedC₁-C₆₀ heteroarylene group, a substituted or unsubstituted divalentnon-aromatic condensed polycyclic group, and a substituted orunsubstituted divalent non-aromatic condensed heteropolycyclic group, n1is an integer selected from 0 to 3, n2 is an integer selected from 1 to3, R₁ is selected from a hydrogen, a deuterium, a substituted orunsubstituted C₁-C₆₀ alkyl group, a substituted or unsubstituted C₂-C₆₀alkenyl group, a substituted or unsubstituted C₂-C₆₀ alkynyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkyl group, a substituted orunsubstituted C₃-C₁₀ cycloalkenyl group, a substituted or unsubstitutedC₁-C₁₀ heterocycloalkenyl group, a substituted or unsubstituted C₆-C₆₀aryl group, a substituted or unsubstituted C₁-C₆₀ heteroaryl group, asubstituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted monovalentnon-aromatic condensed heteropolycyclic group, a1 is an integer selectedfrom 1 to 3, wherein at least one substituent of the substituted C₃-C₁₀cycloalkylene group, the substituted C₁-C₁₀ heterocycloalkylene group,the substituted C₃-C₁₀ cycloalkenylene group, the substituted C₁-C₁₀heterocycloalkenylene group, the substituted C₆-C₆₀ arylene group, thesubstituted C₁-C₆₀ heteroarylene group, the substituted divalentnon-aromatic condensed polycyclic group, the substituted divalentnon-aromatic condensed heteropolycyclic group, the substituted C₁-C₆₀alkyl group, the substituted C₂-C₆₀ alkenyl group, the substitutedC₂-C₆₀ alkynyl group, the substituted C₃-C₁₀ cycloalkyl group, thesubstituted C₁-C₁₀ heterocycloalkyl group, the substituted C₃-C₁₀cycloalkenyl group, the substituted C₁-C₁₀ heterocycloalkenyl group, thesubstituted C₆-C₆₀ aryl group, the substituted C₁-C₆₀ heteroaryl group,the substituted monovalent non-aromatic condensed polycyclic group, andthe substituted monovalent non-aromatic condensed heteropolycyclic groupis selected from: a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group and a saltthereof, a sulfonic acid group and a salt thereof, a phosphoric acidgroup and a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group,a C₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxy group; a C₁-C₆₀ alkyl group,a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxygroup, each substituted with at least one of a deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxyl groupand a salt thereof, a sulfonic acid group and a salt thereof, aphosphoric acid group and a salt thereof, a C₃-C₁₀ cycloalkyl group, aC₃-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₃-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group; a C₃-C₁₀ cycloalkyl group, a C₃-C₁₀heterocycloalkyl group, a C₃-C₆₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group; a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, and a monovalent non-aromaticcondensed heteropolycyclic group, each substituted with at least one ofa deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxyl group and a salt thereof, a sulfonic acid group and asalt thereof, a phosphoric acid group and a salt thereof, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxygroup, a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, aC₃-C₁₀ cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀aryl group, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group; and—N(Q₁)(Q₂), —Si(Q₃)(Q₄)(Q₅), and —B(Q₆)(Q₇), R₂, R₃, and Q₁ to Q₇ areeach independently selected from a hydrogen, a deuterium, —F, —Cl, —Br,—I, a cyano group, a nitro group, a C₁-C₆₀ alkyl group, a C₆-C₆₀ arylgroup, a C₂-C₆₀ heteroaryl group, a monovalent non-aromatic condensedpolycyclic group, and a monovalent non-aromatic condensedheteropolycyclic group, a2 is an integer selected from 1 to 3, a3 is aninteger selected from 1 to 5, m is an integer selected from 1 to 4, andk is an integer selected from 1 to
 4. 2. The silane-based compound asclaimed in claim 1, wherein L₁ and L₂ are each independently a grouprepresented by one of Formulae 3-1 to 3-32:

wherein, in Formulae 3-1 to 3-32, Y₁ is selected from C(Q₃₁)(Q₃₂),N(Q₃₃), an oxygen atom, a sulfur atom, and Si(Q₃₄)(Q₃₅), Q₃₁ to Q₃₅ areeach independently selected from a hydrogen, a deuterium, a C₁-C₂₀ alkylgroup, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group, Z₁ and Z₂ are each independently selected from ahydrogen, a deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxyl group and a salt thereof, asulfonic acid group and a salt thereof, a phosphoric acid group and asalt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenylgroup, a naphthyl group, a fluorenyl group, a spiro-fluorenyl group, abenzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group,an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, aquinolinyl group, an isoquinolinyl group, a quinoxalinyl group, aquinazolinyl group, a carbazolyl group, and a triazinyl group, d1 is aninteger selected from 1 to 4, d2 is an integer selected from 1 to 3, d3is an integer selected from 1 to 6, d4 is an integer selected from 1 to8, d5 is 1 or 2, and d6 is an integer selected from 1 to
 5. 3. Thesilane-based compound as claimed in claim 1, wherein L₁ and L₂ are eachindependently a group represented by one of Formulae 4-1 to 4-23:


4. The silane-based compound as claimed in claim 1, wherein n1 is 0or
 1. 5. The silane-based compound as claimed in claim 1, wherein n2 is1 or
 2. 6. The silane-based compound as claimed in claim 1, wherein R₁is selected from: a hydrogen, a deuterium, a methyl group, an ethylgroup, an n-propyl group, an iso-propyl group, an n-butyl group, asec-butyl group, an iso-butyl group, and a tert-butyl group; a methylgroup, an ethyl group, an n-propyl group, an iso-propyl group, ann-butyl group, a sec-butyl group, an iso-butyl group, and a tert-butylgroup, each substituted with at least one selected from a deuterium, —F,—Cl, —Br, —I, a cyano group and a nitro group; a phenyl group, anaphthyl group, a fluorenyl group, a benzofluorenyl group, ananthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, aquinolinyl group, an isoquinolinyl group, a carbazolyl group, atriazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group;and a phenyl group, a naphthyl group, a fluorenyl group, abenzofluorenyl group, an anthracenyl group, a pyrenyl group, a chrysenylgroup, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, apyridazinyl group, a quinolinyl group, an isoquinolinyl group, acarbazolyl group, a triazinyl group, a dibenzofuranyl group, and adibenzothiophenyl group, each substituted with at least one selectedfrom a deuterium, —F, —Cl, —Br, —I, a cyano group, a nitro group, aC₁-C₂₀ alkyl group, a C₁-C₂₀ alkyl group substituted with —F, —Cl, —Br,or —I, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, a triazinyl group, and —Si(Q₃)(Q₄)(Q₅), in which Q₃ toQ₅ are each independently selected from a C₁-C₂₀ alkyl group and aC₆-C₆₀ aryl group.
 7. The silane-based compound as claimed in claim 1,wherein R₁ is selected from: a hydrogen, a deuterium, a methyl group, anethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, asec-butyl group, an iso-butyl group, and a tert-butyl group; a methylgroup, an ethyl group, an n-propyl group, an iso-propyl group, ann-butyl group, a sec-butyl group, an iso-butyl group, and a tert-butylgroup, each substituted with at least one of a deuterium, —F, a cyanogroup, and a nitro group; a phenyl group, a naphthyl group, a fluorenylgroup, an anthracenyl group, a pyridinyl group, a pyrazinyl group, acarbazolyl group, a triazinyl group, a dibenzofuranyl group, and adibenzothiophenyl group; a phenyl group, a naphthyl group, a fluorenylgroup, an anthracenyl group, a pyridinyl group, a pyrazinyl group, acarbazolyl group, a triazinyl group, a dibenzofuranyl group, and adibenzothiophenyl group, each substituted with at least one substituentselected from a deuterium, —F, a cyano group, a nitro group, a methylgroup, an ethyl group, an n-propyl group, an iso-propyl group, ann-butyl group, a sec-butyl group, an iso-butyl group, a tert-butylgroup, —CF₃, a methoxy group, an ethoxy group, a tert-butoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, —Si(CH₃),and —Si(Ph)₃.
 8. The silane-based compound as claimed in claim 1,wherein R₁ is selected from: a hydrogen, a deuterium, a methyl group, anethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, asec-butyl group, an iso-butyl group, and a tert-butyl group; a methylgroup, an ethyl group, an n-propyl group, an iso-propyl group, ann-butyl group, a sec-butyl group, an iso-butyl group, and a tert-butylgroup, each substituted with at least one of —F, a cyano group, and anitro group; and groups represented by Formulae 5-1 to 5-45:

wherein, in Formulae 5-1 to 5-45, * indicates a binding site with anadjacent atom.
 9. The silane-based compound as claimed in claim 1,wherein R₁ is selected from: a hydrogen, a methyl group, an ethyl group,an n-propyl group, an iso-propyl group, and an n-butyl group; a methylgroup, an ethyl group, an n-propyl group, and a tert-butyl group, eachsubstituted with at least one of —F, a cyano group, and a nitro group;and groups represented by the following Formulae 5-1, 5-2, 5-14, 5-17,and 5-35 to 5-45, in which * indicates a binding site with an adjacentatom:


10. The silane-based compound as claimed in claim 1, wherein a1 is 1.11. The silane-based compound as claimed in claim 1, wherein R₂ and R₃are each independently selected from: a hydrogen, a deuterium, —F, —Cl,—Br, —I, a cyano group, a nitro group, a methyl group, an ethyl group,an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butylgroup, an iso-butyl group, and a tert-butyl group; and a phenyl group, anaphthyl group, a fluorenyl group, a benzofluorenyl group, ananthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, aquinolinyl group, an isoquinolinyl group, a carbazolyl group, and atriazinyl group.
 12. The silane-based compound as claimed in claim 1,wherein m is 1 or
 2. 13. The silane-based compound as claimed in claim1, wherein the silane-based compound represented by Formula 1 isrepresented by one of Formulae 1-1 to 1-4:

wherein, in Formulae 1-1 to 1-4, L₁₁, L₁₂, L₁₃, L₂₁, L₂₂, L₂₃, and L₂₄are each independently the same as groups defined for defined for L₁ andL₂ of Formula 1, n11, n12, and n13 are each independently the same asvalues defined for n1 of Formula 1, n21 to n24 are each independentlythe same as values defined for n2 of Formula 1, R₁₁, R₁₂, and R₁₃ areeach independently the same as groups defined for R₁ of Formula 1, andm1 to m4 are each independently the same as values defined for m ofFormula
 1. 14. The silane-based compound as claimed in claim 13, whereinL₁₁, L₁₂, L₂₁, L₁₃, L₂₂, L₂₃, and L₂₄ are each independently a grouprepresented by one of Formulae 4-1 to 4-23, n11, n12, and n13 are eachindependently 0 or 1, and n21 to n24 are each independently 1 or 2:


15. The silane-based compound as claimed in claim 13, wherein R₁₁, R₁₂,and R₁₃ are each independently selected from: a hydrogen, a methylgroup, an ethyl group, an n-propyl group, an iso-propyl group, and ann-butyl group; a methyl group, an ethyl group, an n-propyl group, and atert-butyl group, each substituted with at least one of —F, a cyanogroup, and a nitro group; and groups represented by Formulae 5-1, 5-2,5-14, 5-17, and 5-35 to 5-45:

wherein, in Formulae 5-1, 5-2, 5-14, 5-17, and 5-35 to 5-45, * indicatesa binding site with an adjacent atom.
 16. The silane-based compound asclaimed in claim 13, wherein m1 to m4 are each independently 1 or
 2. 17.The silane-based compound as claimed in claim 1, wherein thesilane-based compound represented by Formula 1 is one of Compounds 1 to40:


18. An organic light-emitting device, comprising: a first electrode; asecond electrode opposite to the first electrode; and an organic layerbetween the first electrode and the second electrode, the organic layerincluding an emission layer, wherein the organic layer includes thesilane-based compound as claimed in claim
 1. 19. The organiclight-emitting device as claimed in claim 18, wherein the emission layerfurther includes a dopant, and the silane-based compound is a host. 20.The organic light-emitting device as claimed in claim 18, wherein theorganic layer further includes at least one of: a hole transport regionbetween the first electrode and the emission layer, and an electrontransport region between the emission layer and the second electrode.